// generics/DogsAndRobots.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// No (direct) latent typing in Java

import pets.Dog;

class PerformingDog extends Dog implements Performs {
    @Override
    public void speak() {
        System.out.println("Woof!");
    }

    @Override
    public void sit() {
        System.out.println("Sitting");
    }

    public void reproduce() {
    }
}

class Robot implements Performs {
    public void speak() {
        System.out.println("Click!");
    }

    public void sit() {
        System.out.println("Clank!");
    }

    public void oilChange() {
    }
}

class Communicate {
    public static <T extends Performs>
    void perform(T performer) {
        performer.speak();
        performer.sit();
    }
}

public class DogsAndRobots {
    public static void main(String[] args) {
        Communicate.perform(new PerformingDog());
        Communicate.perform(new Robot());
    }
}
/* Output:
Woof!
Sitting
Click!
Clank!
*/
